Adéodat Constant Adolphe Compère-Morel (5 October 1872 – 3 August 1941) was a French Socialist politician, agronomist, orator and writer.

After failing three times as parliamentary candidate in his home department, in 1898, 1902, and 1906, he was elected to the Chamber of Deputies of France representing Gard, département, in April 1909, under the SFIO.

At the 1933 SFIO Congress in Paris, which led to the exclusion of fringe party members, Compère-Morel, Marcel Déat, Adrien Marquet, and Pierre Renaudel joined the Socialist Party of France – Jean Jaurès Union (PSdF–Jean Jaurès Union), the right-wing of the SFIO.

[5] Encyclopédie socialiste syndicale et coopérative de l'International ouvrière was published between 1912 and 1921 in 12 volumes, edited in part in collaboration with Jean Lorris.

[9][10][11][12] He wrote the sections on Charles Rappoport, Paul-Louis, Hubert Rouger, Jean Longuet, Jean-Baptiste Séverac, Pierre Brizon, and Ernest Poisson.